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windbg Debugger

The Microsoft Windows debugger \dmd2\windows\bin\windbg.exe can be used to
symbolically debug D programs, even though it is a C++ debugger.
Versions of windbg.exe other than the one supplied may not work with D.
(Jascha Wetzel's Ddbg for Windows
is also available.)

To prepare a program for symbolic debugging, compile
with the -gc switch:

dmd myprogram -gc

To invoke the debugger on it:

windbg myprogram args...

where args... are the command line arguments to myprogram.exe.

When the debugger comes up, entering the command in the command window:

g _Dmain

will execute the program up until the entry into main().
From thence, pressing the F10 key will single step each line
of code.

Basic Commands:

F5

Go until breakpoint, an exception is thrown, or the end of the program.

F7

Continue until cursor.

F8

Single step, stepping into function calls.

F10

Single step, stepping over function calls.

For more comprehensive information on windbg, consult the
file \dmd2\windows\bin\windbg.hlp.